12 static void adfs_f_free(struct adfs_dir *dir);
72 adfs_dir_checkbyte(const struct adfs_dir *dir)  in adfs_dir_checkbyte()  argument
74 	struct buffer_head * const *bh = dir->bh;  in adfs_dir_checkbyte()
75 	const int blocksize_bits = dir->sb->s_blocksize_bits;  in adfs_dir_checkbyte()
128 			 unsigned int size, struct adfs_dir *dir)  in adfs_dir_read()  argument
142 	dir->nr_buffers = 0;  in adfs_dir_read()
143 	dir->sb = sb;  in adfs_dir_read()
155 		dir->bh[blk] = sb_bread(sb, phys);  in adfs_dir_read()
156 		if (!dir->bh[blk])  in adfs_dir_read()
160 	memcpy(&dir->dirhead, bufoff(dir->bh, 0), sizeof(dir->dirhead));  in adfs_dir_read()
161 	memcpy(&dir->dirtail, bufoff(dir->bh, 2007), sizeof(dir->dirtail));  in adfs_dir_read()
163 	if (dir->dirhead.startmasseq != dir->dirtail.new.endmasseq ||  in adfs_dir_read()
164 	    memcmp(&dir->dirhead.startname, &dir->dirtail.new.endname, 4))  in adfs_dir_read()
167 	if (memcmp(&dir->dirhead.startname, "Nick", 4) &&  in adfs_dir_read()
168 	    memcmp(&dir->dirhead.startname, "Hugo", 4))  in adfs_dir_read()
171 	if (adfs_dir_checkbyte(dir) != dir->dirtail.new.dircheckbyte)  in adfs_dir_read()
174 	dir->nr_buffers = blk;  in adfs_dir_read()
182 		brelse(dir->bh[blk]);  in adfs_dir_read()
184 	dir->sb = NULL;  in adfs_dir_read()
193 adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,  in adfs_dir2obj()  argument
212 	adfs_object_fixup(dir, obj);  in adfs_dir2obj()
233 __adfs_dir_get(struct adfs_dir *dir, int pos, struct object_info *obj)  in __adfs_dir_get()  argument
235 	struct super_block *sb = dir->sb;  in __adfs_dir_get()
241 	if (buffer > dir->nr_buffers)  in __adfs_dir_get()
249 	memcpy(&de, dir->bh[buffer]->b_data + offset, thissize);  in __adfs_dir_get()
251 		memcpy(((char *)&de) + thissize, dir->bh[buffer + 1]->b_data,  in __adfs_dir_get()
257 	adfs_dir2obj(dir, obj, &de);  in __adfs_dir_get()
263 __adfs_dir_put(struct adfs_dir *dir, int pos, struct object_info *obj)  in __adfs_dir_put()  argument
265 	struct super_block *sb = dir->sb;  in __adfs_dir_put()
271 	if (buffer > dir->nr_buffers)  in __adfs_dir_put()
282 	memcpy(&de, dir->bh[buffer]->b_data + offset, thissize);  in __adfs_dir_put()
284 		memcpy(((char *)&de) + thissize, dir->bh[buffer + 1]->b_data,  in __adfs_dir_put()
295 	memcpy(dir->bh[buffer]->b_data + offset, &de, thissize);  in __adfs_dir_put()
297 		memcpy(dir->bh[buffer + 1]->b_data, ((char *)&de) + thissize,  in __adfs_dir_put()
307 static int adfs_dir_find_entry(struct adfs_dir *dir, u32 indaddr)  in adfs_dir_find_entry()  argument
316 		if (!__adfs_dir_get(dir, pos, &obj))  in adfs_dir_find_entry()
329 		       struct adfs_dir *dir)  in adfs_f_read()  argument
336 	ret = adfs_dir_read(sb, indaddr, size, dir);  in adfs_f_read()
340 		dir->parent_id = adfs_readval(dir->dirtail.new.dirparent, 3);  in adfs_f_read()
346 adfs_f_setpos(struct adfs_dir *dir, unsigned int fpos)  in adfs_f_setpos()  argument
351 	dir->pos = 5 + fpos * 26;  in adfs_f_setpos()
356 adfs_f_getnext(struct adfs_dir *dir, struct object_info *obj)  in adfs_f_getnext()  argument
360 	ret = __adfs_dir_get(dir, dir->pos, obj);  in adfs_f_getnext()
362 		dir->pos += 26;  in adfs_f_getnext()
368 adfs_f_update(struct adfs_dir *dir, struct object_info *obj)  in adfs_f_update()  argument
370 	struct super_block *sb = dir->sb;  in adfs_f_update()
373 	ret = adfs_dir_find_entry(dir, obj->indaddr);  in adfs_f_update()
375 		adfs_error(dir->sb, "unable to locate entry to update");  in adfs_f_update()
379 	__adfs_dir_put(dir, ret, obj);  in adfs_f_update()
384 	dir->bh[0]->b_data[0] += 1;  in adfs_f_update()
385 	dir->bh[dir->nr_buffers - 1]->b_data[sb->s_blocksize - 6] += 1;  in adfs_f_update()
387 	ret = adfs_dir_checkbyte(dir);  in adfs_f_update()
391 	dir->bh[dir->nr_buffers - 1]->b_data[sb->s_blocksize - 1] = ret;  in adfs_f_update()
397 	memcpy(&dir->dirhead, bufoff(dir->bh, 0), sizeof(dir->dirhead));  in adfs_f_update()
398 	memcpy(&dir->dirtail, bufoff(dir->bh, 2007), sizeof(dir->dirtail));  in adfs_f_update()
400 	if (dir->dirhead.startmasseq != dir->dirtail.new.endmasseq ||  in adfs_f_update()
401 	    memcmp(&dir->dirhead.startname, &dir->dirtail.new.endname, 4))  in adfs_f_update()
404 	if (memcmp(&dir->dirhead.startname, "Nick", 4) &&  in adfs_f_update()
405 	    memcmp(&dir->dirhead.startname, "Hugo", 4))  in adfs_f_update()
408 	if (adfs_dir_checkbyte(dir) != dir->dirtail.new.dircheckbyte)  in adfs_f_update()
412 	for (i = dir->nr_buffers - 1; i >= 0; i--)  in adfs_f_update()
413 		mark_buffer_dirty(dir->bh[i]);  in adfs_f_update()
420 	adfs_error(dir->sb, "whoops!  I broke a directory!");  in adfs_f_update()
426 adfs_f_sync(struct adfs_dir *dir)  in adfs_f_sync()  argument
431 	for (i = dir->nr_buffers - 1; i >= 0; i--) {  in adfs_f_sync()
432 		struct buffer_head *bh = dir->bh[i];  in adfs_f_sync()
442 adfs_f_free(struct adfs_dir *dir)  in adfs_f_free()  argument
446 	for (i = dir->nr_buffers - 1; i >= 0; i--) {  in adfs_f_free()
447 		brelse(dir->bh[i]);  in adfs_f_free()
448 		dir->bh[i] = NULL;  in adfs_f_free()
451 	dir->nr_buffers = 0;  in adfs_f_free()
452 	dir->sb = NULL;  in adfs_f_free()